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Geothermal Energy

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Fig. 3 | Geothermal Energy

Fig. 3

From: Detailed descriptions of the lower-middle Triassic and Permian formations using cores and gamma-rays from the EPS-1 exploration geothermal borehole (Soultz-sous-Forêts, Upper Rhine Graben, France)

Fig. 3

Photo board of the cores from the middle Muschelkalk, with the Box associated with the cores; this package is correlated to a formation (with the name and boxes concerned). All the cores have a diameter of 78 mm. All the boxes correspond to the Marnes Bariolées formation. Box 06 corresponds to dolomite alternating with dolomitic marl with sealed fractures nearly vertical (in white). Box 12 shows great amount of anhydrite layer (in white) in the dolomitic formation (gray). Boxes 14, 18, 19 and 21 corresponds to dolomite strongly folded, with fractures (in white in the Box 14 and 21). Box 29 corresponds to a hydraulic breccia with mineralized fractures

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